The hospitals underpaid maintenance team vrs a licensed tech from the manufacturer is a false dichotomy. The choice could easily be the hospital's underpaid maintenance team or no repairs at all.
Realistically, they don't put grandma on the vent because they won't buy or keep a device they can't afford to repair.
And why would the company spend more time/effort on their repair staff than the hospital? The company license is no guarantee they aren't minimum wage nobodies.